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Electric circuits miscellaneous

  1. When the angular frequency ω in the given figure is varied from 0 to ∞ , the locus of the current phasor I2 is given by



Correct Option: A

I2(ω) =
Em cosωt
R2 +
1
jωC



At ω = ∞ , I2ω =
Em
R2

Also, I2 is leading with voltage phasor.
At ω = 0, I2 (0) = 0
Thus desired locus should be as shown.



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